Hardware DIPs

File:Mvs dip.jpg

Hard DIPs on MV1F MVS board.

File:Harddips.png

DIP switches state viewer in the system ROM.

Physical DIP switches on MVS boards used to configure various options like coin-up and multiplayer link. The switches states are read through register REG_DIPSW as a byte (0 is on).

• Switch 8: Freeze - pauses the game (done by software in a system ROM call)
• Switch 7: Enable freeplay (player start doesn't require credits)
• Switch 6: Enable communication
• Switches 4~5: Multiplayer link cab number (in binary: 1, 2, 3, 4)
• Switch 3: Enable mahjong controller
• Switch 2: Number of coin chutes (1 or 2)
• Switch 1: Bring up the system ROM menu at boot

There are no such switches on home and CD systems.